DETERMINATION OF THE LIBERATION SIZE AND AMENABILITY TO BENEFICIATION BY GRAVITY SEPARATION TECHNIQUES OF AGBADO-OKUDU IRON ORE USING SINK-FLOAT HEAVY LIQUID ANALYSIS
Publication Date : 01/08/2007
This paper presents the work carried out on the determination of the liberation size and amenability to beneficiation by gravity separation technique of Agbado-Okudu iron ore deposit using heavy liquid analysis. The results of the chemical analysis of the ore gave the composition of the four important elements/compounds in the ore as follows- 37%Fet (Total iron content), 43.18% SiO2, 0.03% P2O5 and 0.15%S. The results of the size/assay analysis revealed both the iron and silica to be uniformly distributed in the coarser size fractions, which makes it very difficult to achieve complete liberation of the iron bearing minerals from the gangue mineral (silica) at coarse particle sizes. The results of the heavy liquid test gave the optimum liberation size of the iron bearing minerals from the gangue(silica) to be -90+63μm size fraction which suggests that, the comminution schedule of the ore should target crushing and grinding to (–90 + 63μm) size fraction prior to beneficiation.
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